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PHP File functions

Function Description
basename()  Returns the filename component of a path
chgrp()  Changes the file group
chmod()  Changes the file mode
chown()  Changes the file owner
clearstatcache()  Clears the file status cache
copy()  Copies a file
delete()  See unlink() or unset()
dirname()  Returns the directory name component of a path
disk_free_space()  Returns the free space of a directory
disk_total_space()  Returns the total size of a directory
diskfreespace()  Alias of disk_free_space()
fclose()  Closes an open file
feof()  Tests for end-of-file on an open file
fflush()  Flushes buffered output to an open file
fgetc()  Returns a character from an open file
fgetcsv()  Parses a line from an open file, checking for CSV fields
fgets()  Returns a line from an open file
fgetss()  Returns a line, with HTML and PHP tags removed, from an open file
file()  Reads a file into an array
file_exists()  Checks whether or not a file or directory exists
file_get_contents()  Reads a file into a string
file_put_contents  Writes a string to a file
fileatime()  Returns the last access time of a file
filectime()  Returns the last change time of a file
filegroup()  Returns the group ID of a file
fileinode()  Returns the inode number of a file
filemtime()  Returns the last modification time of a file
fileowner()  Returns the user ID (owner) of a file
fileperms()  Returns the permissions of a file
filesize()  Returns the file size
filetype()  Returns the file type
flock()  Locks or releases a file
fnmatch()  Matches a filename or string against a specified pattern
fopen()  Opens a file or URL
fpassthru()  Reads from an open file, until EOF, and writes the result to the output buffer
fputcsv()  Formats a line as CSV and writes it to an open file
fputs()  Alias of fwrite()
fread()  Reads from an open file
fscanf()  Parses input from an open file according to a specified format
fseek()  Seeks in an open file
fstat()  Returns information about an open file
ftell()  Returns the current position in an open file
ftruncate()  Truncates an open file to a specified length
fwrite()  Writes to an open file
glob()  Returns an array of filenames / directories matching a specified pattern
is_dir()  Checks whether a file is a directory
is_executable()  Checks whether a file is executable
is_file()  Checks whether a file is a regular file
is_link()  Checks whether a file is a link
is_readable()  Checks whether a file is readable
is_uploaded_file()  Checks whether a file was uploaded via HTTP POST
is_writable()  Checks whether a file is writeable
is_writeable()  Alias of is_writable()
link()  Creates a hard link
linkinfo()  Returns information about a hard link
lstat()  Returns information about a file or symbolic link
mkdir()  Creates a directory
move_uploaded_file()  Moves an uploaded file to a new location
parse_ini_file()  Parses a configuration file
pathinfo()  Returns information about a file path
pclose()  Closes a pipe opened by popen()
popen()  Opens a pipe
readfile()  Reads a file and writes it to the output buffer
readlink()  Returns the target of a symbolic link
realpath()  Returns the absolute pathname
rename()  Renames a file or directory
rewind()  Rewinds a file pointer
rmdir()  Removes an empty directory
set_file_buffer()  Sets the buffer size of an open file
stat()  Returns information about a file
symlink()  Creates a symbolic link
tempnam()  Creates a unique temporary file
tmpfile()  Creates a unique temporary file
touch()  Sets access and modification time of a file
umask()  Changes file permissions for files
unlink()  Deletes a file
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